kcaesar2323 kcaesar2323
  • 03-11-2021
  • Mathematics
contestada

solve the following system of equation 5x + 4y = -4 and 3x + 4y =12

Respuesta :

ridmitharuka
ridmitharuka ridmitharuka
  • 03-11-2021

Answer:

x=-8  y=9

Step-by-step explanation:

5x + 4y = -4----(1)

3x + 4y =12-----(2)

(2)-(1)

(3x+4y)-(5x+4y)=12-(-4)

3x+4y-5x-4y=12+4

-2x=16

x=16/-2

x=-8

substitute in (1)

5(-8)+4y=-4

-40+4y=-4

4y=-4+40

4y=36

y=36/4

y=9

Answer Link

Otras preguntas

According to the Iron Triangle Theory, which one of the following statements is inaccurate?
Which Middle Eastern plateau is surrounded by mountains and contains two uninhabitable deserts? A. Saudi Arabia's Central Plateau B. Iran's Interior Plateau C.
help with this as well
can anyone help me???
A baker rents space in a commercial kitchen for $210 per week. For each pie he bakes, he spends $4 on materials. He charges $7.50 per pie. The graph below shows
According to the sedimentary rock layers shown below, which statement is true? A. Fossil B is younger than A, but older than C. B. Fossil C is younger than D, b
NO LINKS OR FILLES!! The United States Constitution could be described as ___________. A) the Great Compromise B) the supreme law of the land C) the Bill of Ri
PLEASE PLEASEE ANSWER THE QUESTION IN THE PICTURE BELOW which form most quickly reveals the vertex? And what is the vertex??
A high-stress job, overcrowding, and long commutes to work are examples of the way some psychologists conceptualize stress as a ________.
You and your mom have (different/similar/identical) DNA. PLS HELP WHICH ANSWER IS IT